5pcs N50 15x3mm Countersunk Ring Magnets 4mm Hole Rare Earth Neodymium Magnets

Description:5pcs N50 15x3mm Countersunk Ring Magnets 4mm Hole Rare Earth Neodymium MagnetsSpecification:Shape : RoundMaterial: NdFeB magnetic materialProduct Size : 15mm x 3mm Hole 4mmGrade : N50Quantity : 5Usage:1. Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio and so on.2. Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, sound meter, a reed switch, sensors.3. Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors,motors, vibration motors.4. Machinery and equipment: magnetic separation, magnetic machinery.5. Healthcare: magnetic health products and so on.6. Wedding corsage badges, etc., can be replaced with a magnet attractsevery other clothes pins, so as not to damage the dress.7. For the overlying metal drawing board for fixing the drawing paper. Magnetic blackboard whiteboard fixed file drawings.8. Advertising magnets available to replace the original fixtures, at any timeconvenient to replace the ad content.9. Models piling, you can use small magnets to connect two widgets.10. Studio, bulk magnet can be used to adsorb screws and other parts, even wrenches and other tools! WarningThese magnets are very powerful which should be handled with great care.Do not allow children to play with them unsupervisedas they could get injured.Especially pay attention to the samll magnets , please place in somewhere children cant reach.Care should be used when handling two magnets as th